EP0025678B1 - Reinigungsvorrichtung für ein Übertragungssystem einer Nasskopiermaschine - Google Patents

Reinigungsvorrichtung für ein Übertragungssystem einer Nasskopiermaschine Download PDF

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Publication number
EP0025678B1
EP0025678B1 EP80303125A EP80303125A EP0025678B1 EP 0025678 B1 EP0025678 B1 EP 0025678B1 EP 80303125 A EP80303125 A EP 80303125A EP 80303125 A EP80303125 A EP 80303125A EP 0025678 B1 EP0025678 B1 EP 0025678B1
Authority
EP
European Patent Office
Prior art keywords
roller
cleaning
developing solution
cleaning device
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80303125A
Other languages
English (en)
French (fr)
Other versions
EP0025678A1 (de
Inventor
Furuichi Masayoshi
Honjo Takeshi
Akiba Nobuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP11841679A external-priority patent/JPS5642258A/ja
Priority claimed from JP12126879A external-priority patent/JPS5643669A/ja
Priority claimed from JP12126779A external-priority patent/JPS5643668A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP0025678A1 publication Critical patent/EP0025678A1/de
Application granted granted Critical
Publication of EP0025678B1 publication Critical patent/EP0025678B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0088—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge removing liquid developer

Definitions

  • a separating roller 12 is provided following the transferring device 6, a separating roller 12 is provided.
  • the separating roller 12 is provided with a separating guide 13 which is positioned above the surface of the roller 12 adjacent to the surface of the drum 1. More specifically, the separating guide 13 extends slightly inwardly of the drum 1 towards the center of the drum 1 at one end of the drum 1 and along the separating roller 12.
  • a developing solution discharging member 28 is fixedly secured to the upper surface of the supporting member 19 by screws 27.
  • the discharging member 28 is constituted by a squeezing member 29 which depresses the outer wall of the roller member 18 over its entire length, thereby deforming the roller member 18 so as to squeeze out the developing solution absorbed by the latter, and an introducing member 32 for introducing the developing solution thus squeezed out to a discharge path 31.
  • the introducing member 32 extends from the cleaning member 29 and serves as a side wall of the discharge path 31, which is in the form of a groove.
  • the two ends of the groove-shaped discharge path 31 are closed and the bottom surface thereof is inclined to cause the developing solution to flow out.
  • a discharge outlet 33 is provided in at least one end portion of the bottom of the discharge path 31, and is connected through a hose 34 to the developing device 4.
  • Figure 4 shows a modification of the developing solution discharging member 28 in which a helical vane 35 is provided in the discharge path 31.
  • the helical vane 35 has a shaft 36 which is rotatably supported on one end plate of the discharging path 31 and which is coupled to a drive device (not shown).
  • the helical vane 35 is so designed that its outside diameter is in contact with the bottom of the discharging path 31.
  • the helical vane 35 is rotated to discharge toner which might otherwise accumulate in the discharge path 31.
  • the helical vane 35 may also be provided in the discharge paths of the embodiments of the invention described below, thereby providing excellent effects.
  • the provision of the helical vane 35 prevents a reduction in section of the discharge path after a long period of use, thereby resulting in economical use of toner.
  • Figure 12 shows another example of the cleaning roller.
  • the cleaning roller member 18a has end portions which are slightly larger in diameter than the remaining portions thereof.
  • One of the end portions is in the form of an impeller having vanes 20a.
  • each vane 20a is squeezed by the squeezing member 29 and then depresses the end portion of the blade plate 22 to clean the latter. Therefore, the vane 20a falls on the step of the drum 1 to clean the end face of the drum 1.
  • the toner is conveyed by the helically threaded groove of the roller member 18 in the axial direction towards the side of the drum opposite to the side where the step of the separation member of the drum is provided. As the roller member 18 is turned, it is again brought into close contact with the drum 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Wet Developing In Electrophotography (AREA)

Claims (12)

1. Reinigungsvorrichtung für ein Übertragungssystem einer Naßkopiermaschine, wobei auf einer lichtempfindlichen Oberfläche (1) mittels Toner und einer Entwicklerlösung ein Bild erzeugt wird, wobei die Reinigungsvorrichtung (16) zum Reinigen der lichtempfindlichen Oberfläche (1) eine Reinigungswalze (15) mit einer federelastischen und absorbierenden Umfangsfläche, die die lichtemfindliche Oberfläche (1) über deren volle Breite kontaktiert, eine Quetschvorrichtung (29, 40), die an der Reinigungswalze (15) angreift und aus dieser von der lichtempfindlichen Oberfläche (1) entfernte Entwicklerlösung abquetscht, sowie eine Ableitvorrichtung (31) zum Ableiten der aus der Reinigungswalze (15) gequetschten Eintwicklerflüssigkeit aufweist, dadurch gekennzeichnet, daß eine Reinigungsklinge (22) ebenfalls in Kontakt mit der lichtempfindlichen Oberfläche (1) angeordnet ist und daß ein Endabschnitt der Reinigungsklinge mit der Umfangsfläche der Reinigungswalze (15) in Gleitkontakt steht und dadurch von der Reinigungswalze (15) gereinigt wird.
2. Reinigungsvorrichtung nach Anspruch 1, gekennzeichnet durch ein Einleitorgan (32) zum Einleiten der aus der Reinigungswalze (15) von der Quetschvorrichtung (29, 40) ausgequetschen Entwicklerlösung in die Ableitvorrichtung (31).
3. Reinigungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Quetschvorrichtung (29), das Einleitorgan (32 und die Ableitvorrichtung (31) als eine Einheit ausgebildet sind.
4. Reinigungsvorrichtung nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, daß die Umfangsfläche der Reinigungswalze (15) mindestens, einen Endabschnitt mit größerem Durchmesser als die übrige Umfangsfläche aufweist, wobei dieser Endabschnitt mit einer entsprechenden Seitenfläche der lichtempfindlichen Oberfläche (1) in engem Kontakt liegt.
5. Reinigungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Reinigungswalze (15) auf ihrer Umfangsfläche eine Mehrzahl Vorsprünge (20, 20b) aufweist.
6. Reinigungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Vorsprünge (20) an mindestens einem Endabschnitt der Reinigungswalze (15), dessen Durchmesser größer als derjenige der übrigen Walze ist, ausgebildet sind.
7. Reinigungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Vorsprünge (20) als Verzahnung ausgebildet sind.
8. Reinigungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Vorsprünge (20) als Laufrad ausgebildet sind.
9. Reinigungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in oder auf der Umfangsfläche der Reinigungswalze (15) mindestens eine wendelförmige Ausbildung vorgesehen ist, die an dem Endabschnitt der Reinigungsklinge (22) verbliebenen Toner in Axialrichtung der Reinigungswalze (15) abfördert.
10. Reinigungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ableitvorrichtung (31) eine Wendelschaufel (35) aufweist, die zur Ableitung der Entwicklerlösung umläuft.
11. Reinigungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Quetschvorrichtung einen Quetschabschnitt (29), der an der Reinigungswalze (15) angreift, sowie einen langen Abschnitt aufweist, der sich von dem Quetschabschnitt (29) nach unten erstreckt und der Reinigungswalze (15) zugewandt ist.
12. Reinigungsvorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Reinigungsklinge (22) eine Rippe (30) aufweist, die ein Ende des langen Abschnitts kontaktiert.
EP80303125A 1979-09-14 1980-09-05 Reinigungsvorrichtung für ein Übertragungssystem einer Nasskopiermaschine Expired EP0025678B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP118416/79 1979-09-14
JP11841679A JPS5642258A (en) 1979-09-14 1979-09-14 Cleaning device
JP121267/79 1979-09-19
JP12126879A JPS5643669A (en) 1979-09-19 1979-09-19 Cleaning device
JP121268/79 1979-09-19
JP12126779A JPS5643668A (en) 1979-09-19 1979-09-19 Cleaning device

Publications (2)

Publication Number Publication Date
EP0025678A1 EP0025678A1 (de) 1981-03-25
EP0025678B1 true EP0025678B1 (de) 1983-08-24

Family

ID=27313573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80303125A Expired EP0025678B1 (de) 1979-09-14 1980-09-05 Reinigungsvorrichtung für ein Übertragungssystem einer Nasskopiermaschine

Country Status (3)

Country Link
US (1) US4390268A (de)
EP (1) EP0025678B1 (de)
DE (1) DE3064638D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601569A (en) * 1984-12-19 1986-07-22 Eastman Kodak Company Apparatus for cleaning a photoconductor
DE3517782A1 (de) * 1985-05-17 1986-11-20 Mannesmann AG, 4000 Düsseldorf Reiniger fuer eine trommel
NL8501718A (nl) * 1985-06-14 1987-01-02 Oce Nederland B V Patents And Contactfixeerinrichting.
JPS6255686A (ja) * 1985-09-05 1987-03-11 Mita Ind Co Ltd トナ−回収装置
US4829337A (en) * 1987-04-01 1989-05-09 Kentek Information Systems, Inc. Cleaning device for a photoconductive printer or copier
AU594594B2 (en) * 1987-12-18 1990-03-08 Fujitsu Limited Cleaning unit for cleaning recording medium of an electrophotographic apparatus
JP3023421B2 (ja) * 1997-02-19 2000-03-21 日本ボールドウィン株式会社 シリンダ洗浄装置および洗浄方法
KR100369472B1 (ko) * 1999-11-19 2003-01-24 삼성전자 주식회사 습식 전자사진방식 칼라 인쇄기의 스퀴징장치
US8218997B2 (en) * 2008-05-30 2012-07-10 Ricoh Company, Ltd. Cleaning member, charging device, process cartridge, and image forming apparatus
JP6283492B2 (ja) * 2013-10-09 2018-02-21 京セラドキュメントソリューションズ株式会社 クリーニング装置及びそれを備えた画像形成装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1417777A (en) * 1972-04-06 1975-12-17 Fuji Photo Film Co Ltd Electrophotographic marking apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807853A (en) * 1972-08-09 1974-04-30 Xerox Corp Electrophotographic cleaning apparatus
US3955533A (en) * 1972-09-27 1976-05-11 Smith Ian E Squeegee roller system for removing excess developer liquid from photoconductive surfaces
JPS5346097B2 (de) * 1973-07-20 1978-12-11
GB1506012A (en) * 1974-02-25 1978-04-05 Canon Kk Apertured photosensitive screens in electrophotographic apparatus
JPS5193247U (de) * 1975-01-23 1976-07-26
US4392742A (en) * 1978-11-09 1983-07-12 Savin Corporation Liquid developer copier cleaning system incorporating resilient closed-cell cleaning roller
US4259003A (en) * 1979-08-06 1981-03-31 Savin Corporation Imaging surface discharge and cleaning apparatus for electrophotographic copier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1417777A (en) * 1972-04-06 1975-12-17 Fuji Photo Film Co Ltd Electrophotographic marking apparatus

Also Published As

Publication number Publication date
DE3064638D1 (en) 1983-09-29
EP0025678A1 (de) 1981-03-25
US4390268A (en) 1983-06-28

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